Here’s a look at some of the companies the Yahoo Finance team will be watching for you today.

Netflix (NFLX) shares are sliding more Tuesday morning after a disappointing earnings report led the streaming site to lose $21 billion in market value Monday. Netflix says it added about 1 million fewer subscribers than expected last quarter. That’s renewing concerns its stock may be in a bubble, but Netflix’s CEO insists the “fundamentals have never been stronger.”

Just call it the $2 billion tweet. Tesla’s (TSLA) stock slid 4% Monday, wiping out $2 billion in market value after CEO Elon Musk’s Twitter attack on a diver who helped rescue a Thai soccer team out of a cave. The rescuer is now threatening legal action.

Ford (F) has agreed to a $299 million settlement over faulty air bags. The settlement is for economic damages linked to inflators made by Takata. At least 23 deaths and hundreds of injuries are linked to the faulty air bags. Ford says it’s focused on working with customers to get their cars repaired.

LabCorp (LH) is investigating “suspicious activity” on its network. No details yet on what happened, but the North Carolina-based bio-tech giant says it immediately took systems offline to contain the activity. It may take several days to get everything back up and running again. LabCorp says there’s no evidence any data was stolen.

IBM (IBM) wants Groupon (GRPN) to pay up for allegedly infringing its patents. IBM is asking a Delaware court to order Groupon to pay $167 million. It says Groupon’s been using e-commerce technology IBM developed, without signing a licensing deal. Groupon says IBM is going too far and doesn’t own the building blocks of the internet.